loS. 



INTRODUCTION. 7 



Flora includes all groups of fungi is Herefordshire. The 

 numbers are as follow : — 



Hymenomycetes 

 Ustilaginea:' and Uredinea.' 

 Asconiycetes .... 

 Spha^ropsidiaceiL', Melanconiaceaj 

 Hyphomycetes . . . 



The entire known British Fungus Flora numbers rather 

 over 5000 species, so that considerably over half this number 

 have been recorded for Yorkshire. According to Saccardo's 

 latest account in his " Sylloge Fungorum," the Fungus Flora 

 of the whole world consists of just over 52,000 species. 



During the last three or four decades the changing of 

 generic names has been somewhat extensive, especially in the 

 Ascomycetes. In some cases one and the same species, has, 

 in various Mycological works, been burdened with over 

 half-a-dozen different generic names. To include all such 

 synonyms would serve no useful purpose in this list, and 

 only such as were necessary to identify previously published 

 records have been employed. 



In conclusion it may be well to intimate that the present 

 enumeration is not considered more than "a contribution" 

 towards the actual number of fungi, indigenous to Yorkshire. 

 Our knowledge of the extent of this flora is yet far from being 

 complete ; many new county, and a few new British records 

 are added each year. Increased interest is being taken in this 

 branch of botany, and the accummulation of new records is 

 constant : these have been included up to going to press. 

 Seeing that such a vast proportion of the county remains to 

 be thoroughly inv^tigated, there is plenty of scope for new 

 discoveries. What is possible in this direction may be 

 gathered by referring to the Scarborough and Hebden Bridge 

 records, in comparison to all others. The fact is here made 

 clear that paucity of records for any given district implies lack 

 of investigation rather than absence of fungi. 



